Name | CVE-2024-41007 |
Description | In the Linux kernel, the following vulnerability has been resolved: tcp: avoid too many retransmit packets If a TCP socket is using TCP_USER_TIMEOUT, and the other peer retracted its window to zero, tcp_retransmit_timer() can retransmit a packet every two jiffies (2 ms for HZ=1000), for about 4 minutes after TCP_USER_TIMEOUT has 'expired'. The fix is to make sure tcp_rtx_probe0_timed_out() takes icsk->icsk_user_timeout into account. Before blamed commit, the socket would not timeout after icsk->icsk_user_timeout, but would use standard exponential backoff for the retransmits. Also worth noting that before commit e89688e3e978 ("net: tcp: fix unexcepted socket die when snd_wnd is 0"), the issue would last 2 minutes instead of 4. |
Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
References | DSA-5747-1 |
The table below lists information on source packages.
Source Package | Release | Version | Status |
---|---|---|---|
linux (PTS) | bullseye (security), bullseye | 5.10.223-1 | fixed |
bookworm | 6.1.106-3 | fixed | |
bookworm (security) | 6.1.99-1 | vulnerable | |
trixie | 6.10.6-1 | fixed | |
sid | 6.10.7-1 | fixed |
The information below is based on the following data on fixed versions.
Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
---|---|---|---|---|---|---|
linux | source | bullseye | 5.10.223-1 | DSA-5747-1 | ||
linux | source | bookworm | 6.1.106-1 | |||
linux | source | (unstable) | 6.9.10-1 |
https://git.kernel.org/linus/97a9063518f198ec0adb2ecb89789de342bb8283 (6.10)